Home / 12,438.07-17,161.14-8,656.99

Finding the Fourth Proportional to 12,438.07, 17,161.14 and 8,656.99

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Solution

The fourth proportional to 12,438.07, 17,161.14 and 8,656.99 is: 11,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.07 : 17,161.14 = 8,656.99 : x
  2. Step 2: Convert to fraction form
    12,438.07/17,161.14 = 8,656.99/x
  3. Step 3: Cross multiply
    12,438.07x = 17,161.14 × 8,656.99
  4. Step 4: Simplify right side
    12,438.07x = 148,563,817.37
  5. Step 5: Solve for x
    x = 148,563,817.37/12,438.07
  6. Step 6: Final answer
    x = 11,944.28

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.